Tube lighting fixture



FIG. 1 is a top plan view of a lighting fixture showing my new design therefor;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side perspective view thereof;

FIG. 5 is a right side perspective view thereof;

FIG. 6 is a top left side perspective view thereof;

FIG. 7 is an enlarged detail taken at circle FIG. 7 in FIG. 6;

FIG. 8 is a top right side perspective view thereof; and,

FIG. 9 is an enlarged detail taken at circle FIG. 9 in FIG. 8. 

CLAIM The ornamental design for a tube lighting fixture, as shown and described. 